Bangladesh is a density of populations country! Approximately 170 people live in the country where the area is 1570 sq km. So the swage system and unplan industries garbage, smoke and kitchen; wastage people through here and there. Moreover reconditions cars black smoke is very bad for the environment. So air pollution is a big problem for our country. So our students try to find out the problem and the solution and compare with other countries how to recover or reduce gradually or how conscious soon among ourselves.